Stop-cock.



vM. s. HOLLIS.

STOP COCK.

APPLICATION FILED must. 19 13.

Patented Apr. 6, 1 915.

6 m w $2 mu 3H 8 0 aw Mn 5 M M m THE nokRls PETERS CO. FHOVTD-LITHO"WASHINGTUN, D. C.

or element 26. This element is in the form :1- of a rod which is adaptedtomovelength 'Wise of the stem 20. Thedevice 26 is some- What longerthan the stem 20 ofthe operati.

Zing device 21 and at one'endis provided ,ivvith a knob 27 and itsother" end; ith an enlarged header flange'28. The device26 is adapted tomove freely Within the stem 20 i of the operatingdQYiC and being longer:"than said device, any other object which might "contact With 'thedeviceill and cause i an accidental movement thereof, vvill naturallyfirst engagethe device 26an'd shiftthe 7 same so that it will be less.likely that the ldevice Ql Will beat all disturbed,

i The head. portion 23 of the device-21 is 7 'provided on the underside{thereof with ar plurality of teeth' 29, which are adaptedto enterspaces between the teeth30 on the lower part of the chamber or opening18,

, thus hen the operating device is in the po sitionshown in Fig. 1, theteeth 29 of said deviceivillengage the teeth 30of the sleeve r 16; thuspreventing any rotary movement Whatever ofthe device 21 until thesamejisi forced aWay' fromysaid device. toward the;

plug. By this meansthe operating device is by a stop c ock'maybeprevented from being accidentallyoperated; that simple means is(provided V whereby the valve or plugmemj ber may be readily operated;that said cock is simple in constructionand adds very' little if'anyadditional cost to the ordinary form V I of device of this kindga ndthat said device iseifectivei in useandservesto avoid the liability toaccidents by the accidental turn ing on ofithe' gas or any other mediumto be 'controlled. i

Having" thus described my invention, I

. k lairn'as nevi and desire to secure by Letters" QPatentP a 1 a 1 LAdevice oflthe character described,

'comprisinga casing, a valve :plng 'forscontrolling the medium passingthrough said casing, a gi'avi ty rotaryoperatingdevice for the plugadapted tobe moved'therefrom, J and a slidable rod mounted axially ofthe. j valve andsomeW-hat longer than theloperat- {the same. A

5. I stopcock, the combination of .ai 'casing, valve member arrangedringsaid pted to control themedinm passing thereth'rough' and havinganelon-j gated projection at onejend, a sleeve, a rothan the rotary deviing device and'freely slidable therein and having one end normallyprojecting beyond said operating device.

to engage the 'p jection' to rotate the 'same and adapted to movetherefrom by gravity; and a rod somewhat longer 1 than the rotary deviceand-having one end normally projecta v ingbeyo'nd the operatingdevice-andadapted to'engage a partQof the plug if moved I lengthwise ofthe operating device.

3. In a stop cock, the

ated; pro n at one end, a sleeve,fa-ir -y d vice ;adaptedlto rotate thevalve I mber, and aslidablelrod mounted axially 3 of the valve and,somevvhat longer than the rotary device and having one end a normallyirojectingbeyond' the rotary device a In-a stop co k; the combinati'ocasing; a valve member arranged in said casing and adapted. to controlthe medium passing' therethrough andchaving an, elon '7 gated projectionat one ienafa' sleeve-, a

wry :dev ice having a part pro ectmg beyondl;

the sleeve to rotatelsaid'valve 'member fand slidablemeans mountedaxially of the valve" p and. ffeely'slidable"inqthe rotary device and,somewhat longer than the rotaryv device "and 7 part normally projectingbeyond by having a.

casing and a taryj device passing thfoagh the sleeve and :having'auslotted- 'endadapted to engage the projection to rotatethel valvemember anid" .a slidable rod momited'aXia-lly of the valve and freelyslidable inland somewhat longer having one efnd normally project eyonditheYsamei; f

This V specification signe this 29th day of January 1918 NVitnesses; if

' OgBAmaLs;

' LnsTER Tindn.

Copiesbf this patent may be obtained for five cents each, by addressingthe 'lCo mfiiis sioner:of "Patents f WashingtomD. 0.

2. In astop. cock, thecombination of a I casing, a valve memberarrangedinsaid cas-q 'ing and adapted to control themediumpassingtherethrough and having an'elongated projection at oneend, sleevehavingjapon' tion thereof forming'an annular chamber, a}, rotary'devicehaying-a slotted end adapted c mbinati n of a} casing, valve.memberlarranged .in said 1 casing and adapted to controltheinediumpassing th rethrough and "having an elon witnessed V IL-Es S;fH' Lilis';

